Why should men avoid eating garlic when preparing for pregnancy?

Generally speaking, there is no such claim that men should avoid eating garlic when preparing for conception. Men can consume garlic during the preconception period, but should do so in moderation. The detailed explanation is as follows:

Garlic is a common food ingredient containing beneficial compounds such as sulfur-containing substances, which can enhance the body's immune function and reduce the risk of illness. During the preconception period, moderate consumption of garlic by men can provide necessary nutritional support and help maintain overall health.

Although garlic is considered a pungent food, moderate intake does not irritate the gastrointestinal tract, nor does it suppress sperm production or reduce sperm quality. Furthermore, men should maintain a balanced diet during the preconception period, increasing intake of nutrient-rich foods high in protein, vitamins, and minerals—such as milk, eggs, and lean meat—to ensure adequate nutritional needs.

In daily life, it is recommended that men maintain healthy lifestyle habits while preparing for conception, avoiding staying up late to prevent adverse effects on overall health.